# Elementor #1409

Depending on the tasks and purpose, calculators are divided into basic, special, engineering (scientific), financial and many others. Special programs embedded into websites are also called calculators. With their help, you can perform all sorts of calculations much faster.

# Calculator reference

Mathematics

The section includes: geometry, arithmetic, linear algebra, mathematical analysis, analytical geometry.

Geometry

Area of flat figures

- Area, and diameter of the circle
- Calculating the area of a triangle
- Find the area of a right triangle
- Area of an isosceles triangle
- Square area
- Rectangle area
- Rhombus area calculator
- Parallelogram area calculator
- Calculation of the area of the trapezoid
- Ellipse area calculator
- Calculation of the area of the ring
- Quadrangle area
- Find the area of a sector of a ring
- Circle sector area
- Circle segment area
- Regular polygon area

Perimeter of plane figures

Figure side

Area of volumetric figures

Angle

Mathematics

Numbers

Calculators

Theorems, functions and equations

Various calculators

This section contains calculators for different areas of household use.

Physics